// ============================================================================
//
// Copyright (C) 2006-2007 Dengues
//
// Google Group: http://groups.google.com/group/dengues
//
// QQ Group: 24885404
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// ============================================================================
package org.dengues.designer.ui.process.parts;

import java.beans.PropertyChangeListener;
import org.dengues.core.process.CompElement;
import org.eclipse.gef.editparts.AbstractGraphicalEditPart;

/**
 * Qiang.Zhang.Adolf@gmail.com class global comment. Detailled comment <br/>
 * 
 * $Id: Dengues.epf 2007-12-20 qiang.zhang $
 * 
 */
public abstract class AbstractProcessPart extends AbstractGraphicalEditPart implements PropertyChangeListener {

    /**
     * Qiang.Zhang.Adolf@gmail.com AbstractProcessPart constructor comment.
     */
    public AbstractProcessPart() {
    }

    /**
     * Qiang.Zhang.Adolf@gmail.com Comment method "getCastModel".
     * 
     * @return
     */
    protected abstract CompElement getCastModel();

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.gef.editparts.AbstractGraphicalEditPart#activate()
     */
    @Override
    public void activate() {
        if (isActive()) {
            return;
        }
        getCastModel().addPropertyChangeListener(this);
        super.activate();
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.gef.editparts.AbstractGraphicalEditPart#deactivate()
     */
    @Override
    public void deactivate() {
        if (!isActive()) {
            return;
        }
        getCastModel().removePropertyChangeListener(this);
        super.deactivate();
    }
}
